Moving to Indesign forum.
Just an update as I think I have one problem solved.
Problem: Can't view multiple pages in an indesign doc
Possible cause: this particular indesign file began life as a single page doc.
Fix: since I've changed the filename of the indesign doc, Creative Cloud appears to recognise that it has multiple pages!
I also find the Creative Cloud previews to be useless. I prefer to share files with Dropbox instead, which I find more reliable.
Thanks Steve, The reason for trying the CC option is to take one step out of the collaboration process and that is the necessity to make a pdf. However, Dropbox and a pdf does appear to be a better alternative if CC can't accurately render native files like Indesign.